l6995 STMicroelectronics, l6995 Datasheet - Page 3

• Manufacturer Part Number: l6995
• Description: Step Down Controller For High Differential Input-output Conversion
• Manufacturer: STMicroelectronics

PIN FUNCTION (continued)
ELECTRICAL CHARACTERISTICS
(V
SUPPLY SECTION
SHUTDOWN SECTION
SOFT START SECTION
ON TIME
Symbol
SHDN
CC
(V
(V
(V
(Vcc)
V
V
V
Iqcc
Iqcc
Ton
N°
10
11
12
13
14
15
16
17
18
19
20
Vin
I
I
I
SH
SH
8
9
CC
SS
DR
CC
DR
DR
CC
= V
,
)
)
)
DR
PGOOD Open drain output. The internal transistor is on during soft-start or in case of output voltage
Input voltage range
Turn-onvoltage
Turn-off voltage
Driver quiescent current
Quiescent current
Device On
Device Off
Driver quiescent current in
shutdown
Shut down current
Soft Start current
SS Clamp Voltage
On time duration
PHASE
HGATE
LGATE
PGND
SHDN
BOOT
Name
= 5V; T
OSC
OVP
VFB
ILIM
V
SS
DR
amb
PWM comparator feedback input. Short this pin to INT pin when using the integrator function, or
to VSENSE pin without integrator.
Connect this pin to the input voltage through a voltage divider in order to provide the feed-
forward function. It cannot be left floating.
Soft start pin. A 5 A constant current charges an external capacitor which value sets the soft-
start time.
An external resistor connected between this pin and GND sets the current limit threshold.
Shutdown. When shorted to GND the device stops working; when high, it enables the normal
operation. It cannot be left floating.
Open drain output. When in OVP condition, the internal transistor goes off. Connect this pin to
V
faults. Connect this pin to V
Low Side driver ground.
Low Side driver output.
Low Side driver supply.
Return path of the High Side driver.
High side MOSFETS driver output.
Bootstrap capacitor pin. High Side driver is supplied through this pin.
Parameter
CC
= 0°C to 85°C unless otherwise specified)
through a resistor.
Vout=Vref Fsw=110Khz Iout=1A
VFB > VREF
VFB > VREF
SHDN to GND
SHDN to GND
VREF=VSENSE OSC=250mV
CC
through a resistor.
Test Condition
Description
Min.
850
1.5
4.5
4.2
4.1
1.2
4
Typ.
950
4
Max.
1050
600
5.5
4.4
4.3
0.6
28
20
15
5
6
L6995
Unit
ns
V
V
V
V
V
V
V
A
A
A
A
A
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